| 绝缘护套在变电站500 kV引线中应用的可行性分析 |
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| 引用本文： | 张志猛,贾伯岩,刘杰,孙翠英,康淑丰,吴宏亮.绝缘护套在变电站500 kV引线中应用的可行性分析[J].河北电力技术,2019,38(1):21-23. |
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| 作者姓名： | 张志猛 贾伯岩 刘杰 孙翠英 康淑丰 吴宏亮 |
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| 作者单位： | 国网河北省电力有限公司电力科学研究院,石家庄,050021;国网河北省电力有限公司检修分公司,石家庄,050071;神华河北国华定州发电有限责任公司,保定,073000 |
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| 摘 要： | 对某500 kV变电站部分500 kV引线段存在保护死区问题进行分析,提出对引线加装绝缘护套的绝缘化改造方案,分析加装绝缘护套对空间电场的影响,等效电气间隙的变化,以及护套材料的电气性能、热性能是否满足改造要求,给出优化改造建议。
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| 关 键 词： | 异物短路 保护死区 绝缘护套 间隙 电场强度 |
Application Feasibility Analysis on Insulation Sheath in Substation 500 kV Lead |
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| ZHANG Zhimeng,JIA Boyan,LIU Jie,SUN Cuiying,KANG Shufeng,WU Hongliang.Application Feasibility Analysis on Insulation Sheath in Substation 500 kV Lead[J].Hebei Electric Power,2019,38(1):21-23. |
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| Authors: | ZHANG Zhimeng JIA Boyan LIU Jie SUN Cuiying KANG Shufeng WU Hongliang |
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| Affiliation: | (State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China;State Grid Hebei Maintenance Branch,Shijiazhuang 050071,China;Shenhua Hebei Guohua Dingzhou Power Generation Co.,Ltd.,Baoding 073000 China) |
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| Abstract: | Aiming at the problem of protection dead zone for some 500 kV lead segments in the 500 kV substation,the cause is analyzed,the lead transformation insulation sheath insulation is proposed,and then the influence of the insulation sheath on the spatial electric field is analyzed,the change of the gap before and after the transformation is compared.Whether the electrical and thermal properties of the sheath material can meet the requirement of lead insulation transformation,the optimization and transformation plan is given through the comprehensive analysis. |
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| Keywords: | foreign matter short circuit relay protection dead zone insulation sheath air gap electric field intensity |
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